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/*
C# Network Programming
by Richard Blum
Publisher: Sybex
ISBN: 0782141765
*/
using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Soap;
using System.Security;
using System.Security.Cryptography;
using System.Text;
public class CryptoDataSender
{
private void SendData(NetworkStream strm, SerialEmployee emp)
{
IFormatter formatter = new SoapFormatter();
MemoryStream memstrm = new MemoryStream();
byte[] Key = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16};
byte[] IV = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16};
TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
CryptoStream csw = new CryptoStream(memstrm, tdes.CreateEncryptor(Key, IV), CryptoStreamMode.Write);
formatter.Serialize(csw, emp);
csw.FlushFinalBlock();
byte[] data = memstrm.GetBuffer();
int memsize = (int)memstrm.Length;
byte[] size = BitConverter.GetBytes(memsize);
strm.Write(size, 0, 4);
strm.Write(data, 0, (int)memsize);
strm.Flush();
csw.Close();
memstrm.Close();
}
public CryptoDataSender()
{
SerialEmployee emp1 = new SerialEmployee();
SerialEmployee emp2 = new SerialEmployee();
emp1.EmployeeID = 1;
emp1.LastName = "Blum";
emp1.FirstName = "Katie Jane";
emp1.YearsService = 12;
emp1.Salary = 35000.50;
emp2.EmployeeID = 2;
emp2.LastName = "Blum";
emp2.FirstName = "Jessica";
emp2.YearsService = 9;
emp2.Salary = 23700.30;
TcpClient client = new TcpClient("127.0.0.1", 9050);
NetworkStream strm = client.GetStream();
SendData(strm, emp1);
SendData(strm, emp2);
strm.Close();
client.Close();
}
public static void Main()
{
CryptoDataSender cds = new CryptoDataSender();
}
}
[Serializable]
public class SerialEmployee
{
public int EmployeeID;
public string LastName;
public string FirstName;
public int YearsService;
public double Salary;
public SerialEmployee()
{
EmployeeID = 0;
LastName = null;
FirstName = null;
YearsService = 0;
Salary = 0.0;
}
}
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